Accuracy and Precision Notes

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Accuracy and Precision Notes

• 8/20/12

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Measurement in Science

• In science, we want measurements to be both
  ______________ and ______________.
• What is the difference between ____________ and
  ________________?

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Definitions

• ____________ is a measure of _____________.
• ____________ is a measure of _____________.

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Precision vs. Accuracy

• Accurate means ______________________
  ____________________________________. A
  measurement is accurate if it ___________
  __________ the size of the thing being measured.
• Precise means __________, ___________, getting
  the _______ _______________ each time.

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Precision vs. Accuracy

• Accuracy refers to how closely a measured value
  agrees with _______________________ ____________.
• Precision refers to how closely individual
  measurements agree with _______________.

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